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Proceedings Paper

2.5 THz multipixel heterodyne receiver based on NbN HEB mixers
Author(s): S. Cherednichenko; V. Drakinskiy; J. Baubert; B. Lecomte; F. Dauplay; J.-M. Krieg; Y. Delorme; A. Feret; H.-W. Hübers; A. D. Semenov; G. N. Gol'tsman
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Paper Abstract

A 16 pixel heterodyne receiver for 2.5 THz has been developed based on NbN superconducting hot-electron bolometer (HEB) mixers. The receiver uses a quasioptical RF coupling approach where HEB mixers are integrated into double dipole antennas on 1.5μm thick Si3N4/SiO2 membranes. Spherical mirrors (one per pixel) and backshort distance from the antenna have been used to design the output mixer beam profile. The camera design allows all 16 pixel IF readout in parallel. The gain bandwidth of the HEB mixers on Si3N4/SiO2 membranes was found to be 0.7÷0.9 GHz, which is much smaller than for similar devices on silicon. Application of buffer layers and use of alternative types of membranes (e.g. silicon-on-insulator) is under investigation.

Paper Details

Date Published: 16 June 2006
PDF: 11 pages
Proc. SPIE 6275, Millimeter and Submillimeter Detectors and Instrumentation for Astronomy III, 62750I (16 June 2006); doi: 10.1117/12.672746
Show Author Affiliations
S. Cherednichenko, Chalmers Univ. of Technology (Sweden)
V. Drakinskiy, Chalmers Univ. of Technology (Sweden)
J. Baubert, Observatoire de Paris, LERMA (France)
B. Lecomte, Observatoire de Paris, LERMA (France)
F. Dauplay, Observatoire de Paris, LERMA (France)
J.-M. Krieg, Observatoire de Paris, LERMA (France)
Y. Delorme, Observatoire de Paris, LERMA (France)
A. Feret, Observatoire de Paris, LERMA (France)
H.-W. Hübers, German Aerospace Ctr. (Germany)
A. D. Semenov, German Aerospace Ctr. (Germany)
G. N. Gol'tsman, State Pedagogical Univ. of Moscow (Russia)

Published in SPIE Proceedings Vol. 6275:
Millimeter and Submillimeter Detectors and Instrumentation for Astronomy III
Jonas Zmuidzinas; Wayne S. Holland; Stafford Withington; William D. Duncan, Editor(s)

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